EP 0027511 B1 19850612 - METHOD AND CIRCUIT ARRANGEMENT FOR PUTTING INTO OPERATION THE BILATERAL REMOTE POWER SUPPLY OF INTERMEDIATE POSTS OF A COMMUCATION TRANSMISSION LINE
Title (en)
METHOD AND CIRCUIT ARRANGEMENT FOR PUTTING INTO OPERATION THE BILATERAL REMOTE POWER SUPPLY OF INTERMEDIATE POSTS OF A COMMUCATION TRANSMISSION LINE
Publication
Application
Priority
DE 2933439 A 19790817
Abstract (en)
[origin: US4362952A] Method and apparatus for start-up of reciprocal remote supply feeding of intermediate stations utilizing DC current series feeding. In the operation of remote feeding systems of this type, the switch-on operation for reasons of safety for the individuals, must be accomplished only after testing the remote feeding circuit for freedom of faults. For this purpose the invention provides a test current circuit delivered by one feed circuit which triggers a transmission and delivery of a remote feed current in the other feed circuit which in turn causes in the first feed circuit a change-over switch to operate to switch from test current to remote feed current. The apparatus and method is particularly suitable for the remote feeding of intermediate amplifiers in transmission line sections of communication engineering systems.
IPC 1-7
IPC 8 full level
H04B 3/44 (2006.01)
CPC (source: EP US)
H04B 3/44 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
US 4362952 A 19821207; AT E13787 T1 19850615; DE 2933439 A1 19810226; DE 2933439 C2 19840712; DE 3070755 D1 19850718; DK 353080 A 19810218; EP 0027511 A1 19810429; EP 0027511 B1 19850612; JP S5631240 A 19810330; NO 151521 B 19850107; NO 151521 C 19850424; NO 802449 L 19810218
DOCDB simple family (application)
US 16995280 A 19800718; AT 80104737 T 19800811; DE 2933439 A 19790817; DE 3070755 T 19800811; DK 353080 A 19800815; EP 80104737 A 19800811; JP 11276680 A 19800818; NO 802449 A 19800815